I loved introducing my students to the Hour of Code activities this year - they loved it too!
However, I realized that some of my students would get stumped after a bit and not want to go further without more direction. I felt I needed to break down some of the blockly codes between intervals of levels by way of a PowerPoint in order for my students to get the bigger picture.
I have kept it in a PowerPoint format in order for you to edit it where you feel it is needed.
I hope this helps make the coding lessons even better!